fix: add repository field for npm provenance verification

npm provenance requires package.json repository.url to match the
GitHub repo configured as the trusted publisher.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: jheddings

package.json

@@ -2,6 +2,10 @@
   "name": "@workday/everywhere",
   "version": "0.0.5",
   "private": false,
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/Workday/everywhere"
+  },
   "license": "Apache-2.0",
   "type": "module",
   "main": "./dist/index.js",